We installed a meter, that has been reading for a long time.
We then installed power factor correction equipment based on the readings we got.
The meter was not re-installed properly and we lost about a week's data.
I have downloaded the data from the municipal meter and I would like to upload those readings to this meter on pnpscada.
How can I do that?

you can upload the profile you downloaded from the municipal meter by
1. setting the "last read up to date and time" back to when the problem started
2. uploading the portion of the data that you downloaded from the municipal meter
the system will then pick up where your import stopped and download the rest of the data from the meter

the elster meters with default configuration store about the last 3 months of data

also, you can set the "last read up to date and time" under edit->meter details